need help fast with puffer!!!!!

we have a valentini puffer and have had him for 2 weeks. Yesterday we found him lying hurt on the rocks. Its like his spine is stuck curved!!! i cant go straight and so the only way he can swim is around in a circle. I feel so bad i dont know what to do or what is wrong with him. i dont have a hospital tank so im kinda stuck...
water peram.
salinity: 1.0225
trates + trites: 0
hardness: 11
amonia: 0
temp: 78
i just dont know what to do, i feel like hes suffering:(
 
Top